<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>HTML案例一：菜价单</title>
    <style>
        table, th, td {
            border: 1px solid black;
            border-collapse: collapse;
            padding: 8px;
            text-align: center;
        }
    </style>
</head>
<body>

    <table>
            <tr>
                <th colspan="2">菜价单</th>
                <th rowspan="5">序号</th>
            </tr>
            <tr>
                <th>菜名</th>
                <th>菜价</th>
            </tr>

            <tr>
                <td>白菜</td>
                <td>3￥</td>
            </tr>
            <tr>
                <td>青菜</td>
                <td>3￥</td>
            </tr>
            <tr>
                <td>芹菜</td>
                <td>3￥</td>
            </tr>
    </table>

</body>
</html>